>>-TRUNC(number--+----+--)-------------------------------------><
                 '-,n-'      

returns the integer part of number and n decimal places. The default n is 0 and returns an integer with no decimal point. If you specify n, it must be a positive whole number or zero. The number is first rounded according to standard REXX rules, just as though the operation number+0 had been carried out. The number is then truncated to n decimal places (or trailing zeros are added if needed to make up the specified length). The result is never in exponential form.

TRUNC(12.3)           ->    12
TRUNC(127.09782,3)    ->    127.097
TRUNC(127.1,3)        ->    127.100
TRUNC(127,2)          ->    127.00

The number is rounded according to the current setting of NUMERIC DIGITS if necessary before the function processes it.